The patch titled
Subject: mm: introduce mem_cgroup_put() helper
has been added to the -mm tree. Its filename is
mm-introduce-mem_cgroup_put-helper.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-introduce-mem_cgroup_put-helper.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-introduce-mem_cgroup_put-helper.patch
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------------------------------------------------------
From: Roman Gushchin <guro@xxxxxx>
Subject: mm: introduce mem_cgroup_put() helper
Introduce the mem_cgroup_put() helper, which helps to eliminate guarding
memcg css release with "#ifdef CONFIG_MEMCG" in multiple places.
Link: http://lkml.kernel.org/r/20180623000600.5818-2-guro@xxxxxx
Signed-off-by: Roman Gushchin <guro@xxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN include/linux/memcontrol.h~mm-introduce-mem_cgroup_put-helper include/linux/memcontrol.h
--- a/include/linux/memcontrol.h~mm-introduce-mem_cgroup_put-helper
+++ a/include/linux/memcontrol.h
@@ -375,6 +375,11 @@ struct mem_cgroup *mem_cgroup_from_css(s
return css ? container_of(css, struct mem_cgroup, css) : NULL;
}
+static inline void mem_cgroup_put(struct mem_cgroup *memcg)
+{
+ css_put(&memcg->css);
+}
+
#define mem_cgroup_from_counter(counter, member) \
container_of(counter, struct mem_cgroup, member)
@@ -837,6 +842,10 @@ static inline bool task_in_mem_cgroup(st
return true;
}
+static inline void mem_cgroup_put(struct mem_cgroup *memcg)
+{
+}
+
static inline struct mem_cgroup *
mem_cgroup_iter(struct mem_cgroup *root,
struct mem_cgroup *prev,
_
Patches currently in -mm which might be from guro@xxxxxx are
mm-introduce-mem_cgroup_put-helper.patch
mm-oom-refactor-the-oom_kill_process-function.patch
mm-implement-mem_cgroup_scan_tasks-for-the-root-memory-cgroup.patch
mm-oom-cgroup-aware-oom-killer.patch
mm-oom-cgroup-aware-oom-killer-fix-3.patch
mm-oom-introduce-memoryoom_group.patch
mm-oom-introduce-memoryoom_group-fix.patch
mm-oom-add-cgroup-v2-mount-option-for-cgroup-aware-oom-killer.patch
mm-oom-docs-describe-the-cgroup-aware-oom-killer.patch
mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix.patch
cgroup-list-groupoom-in-cgroup-features.patch
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